FR1463230A - lightweight mine prop - Google Patents

lightweight mine prop

Info

Publication number
FR1463230A
FR1463230A FR41470A FR41470A FR1463230A FR 1463230 A FR1463230 A FR 1463230A FR 41470 A FR41470 A FR 41470A FR 41470 A FR41470 A FR 41470A FR 1463230 A FR1463230 A FR 1463230A
Authority
FR
France
Prior art keywords
mine prop
lightweight
lightweight mine
prop
mine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR41470A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAGYAR ALUMINIUM
Original Assignee
MAGYAR ALUMINIUM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAGYAR ALUMINIUM filed Critical MAGYAR ALUMINIUM
Priority to FR41470A priority Critical patent/FR1463230A/en
Application granted granted Critical
Publication of FR1463230A publication Critical patent/FR1463230A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
    • E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR41470A 1965-12-08 1965-12-08 lightweight mine prop Expired FR1463230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR41470A FR1463230A (en) 1965-12-08 1965-12-08 lightweight mine prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR41470A FR1463230A (en) 1965-12-08 1965-12-08 lightweight mine prop

Publications (1)

Publication Number Publication Date
FR1463230A true FR1463230A (en) 1966-12-23

Family

ID=1582110

Family Applications (1)

Application Number Title Priority Date Filing Date
FR41470A Expired FR1463230A (en) 1965-12-08 1965-12-08 lightweight mine prop

Country Status (1)

Country Link
FR (1) FR1463230A (en)

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